Miirym, Sentinel Wyrm, Bladewing the Risen, and Hammerhead, Maggia Boss

Prerequisites

• Miirym, Sentinel Wyrm on the battlefield
• Bladewing the Risen in hand
• Hammerhead, Maggia Boss on the battlefield
• available

Steps

1. Cast Bladewing by paying
2. When Bladewing enters the battlefield, it and Miirym trigger
3. Resolve the Bladewing trigger, returning any Dragon from your graveyard to the battlefield
4. Holding priority, activate Hammerhead by sacrificing Bladewing
5. Resolve the Miirym trigger, creating a nonlegendary token copy of Bladewing
6. When the Bladewing token enters the battlefield, it triggers, returning Bladewing from your graveyard to the battlefield
7. Repeat from step 2
8. Resolve all Hammerhead abilities

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite creature tokens
• Infinite death triggers
• Return some creature cards from your graveyard to the battlefield